N
A
T
I
O
N
A
L
INDUSTRIAL SERIES
National Precision Bearing
INDUSTRIAL SERIES
8152 - 304TH Avenue SE
PO Box 613
Preston, WA 98050 USA
Tel: 800.426.8038
Tel: 425.222.5900
Fax: 425.222.5950
P
R
E
C
I
S
I
O
N
E-mail: sales@nationalprecision.com
ALIT
09/23/00
A
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ALIT
E
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B
R E
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www.nationalprecision.com
I S T E R
ALIT
Conversion Table
D
Miniature Bearings
I S T E R
Fraction
R Series
Extra Light Inch ......................................................................................................................... pg 1
1/64
1/32
600 Series
Extra Small ................................................................................................................................ pg 2
3/64
6000 Series
Extra Light ................................................................................................................................ pg 3
1/16
6200 Series
Light ......................................................................................................................................... pg 4
6300 Series
5/64
3/32
Medium .................................................................................................................................... pg 5
6000, 6200, & 6300 Series Interchange
Radial Internal Clearance ........................................................................................... pg 6
Specials ............................................................................................................................... pg 7
1600 Series
7/64
1/8
Commercial Inch ....................................................................................................................... pg 8
9/64
5/32
1600 Interchange ........................................................................................................... pg 9
11/64
3/16
V Groove Guide Wheel Bearings & Bushings
..................................................... pg 10
Industrial Airframe Type Ball Bearings
B500 & DW Series ............................................................................................................ pg 11
KP & KPA Series ................................................................................................................. pg 12
Metric Conversion Table ........................................................................... inside back cover
13/64
7/32
15/64
1/4
17/64
9/32
19/64
5/16
See our listing in the Thomas Register
SEE OUR
CATALOG IN THE
CATALOG FILE SECTION
AND ON THE INTERNET
21/64
11/32
23/64
3/8
25/64
h t t p : / / w w w. n p b . t h o m a s re g i s t e r. c o m
13/32
National Precision Bearing reserves the right to
change specifications and other information included
in this catalog without notice.
All information, data and dimension tables in this
catalog have been carefully compiled and thoroughly
checked. However, no responsibility for possible
errors or omissions can be assumed.
National Precision Bearing is a division of
Mechatronics, Inc.
Copyright 2000 National Precision Bearing
Other National Precision
Bearing Product Lines
E
Q
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INDUSTRIAL SERIES
R E
BALL
BEARINGS
Metric
Inch
0.0156
0.0250
0.0312
0.0394
0.0400
0.0469
0.0472
0.0550
0.0591
0.0625
0.0709
0.0781
0.0787
0.0906
0.0937
0.0984
0.1000
0.1024
0.1094
0.1100
0.1102
0.1181
0.1250
0.1256
0.1378
0.1406
0.1562
0.1575
0.1719
0.1875
0.1892
0.1969
0.2031
0.2165
0.2187
0.2344
0.2362
0.2500
0.2656
0.2756
0.2812
0.2883
0.2969
0.3125
0.3150
0.3281
0.3437
0.3543
0.3594
0.3750
0.3906
0.3937
0.4062
mm
0.3969
0.6350
0.7937
1.0000
1.0160
1.1906
1.2000
1.3970
1.5000
1.5875
1.8000
1.9844
2.0000
2.3012
2.3812
2.5000
2.5400
2.6000
2.7781
2.7940
2.8000
3.0000
3.1750
3.1902
3.5000
3.5719
3.9687
4.0000
4.3656
4.7625
4.8057
5.0000
5.1594
5.4991
5.5562
5.9531
6.0000
6.3500
6.7469
7.0000
7.1437
7.3228
7.5406
7.9375
8.0000
8.3344
8.7312
9.0000
9.1281
9.5250
9.9213
10.0000
10.3187
Fraction
27/64
7/16
29/64
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
41/64
21/32
43/64
11/16
45/64
23/32
47/64
3/4
49/64
25/32
51/64
13/16
53/64
27/32
55/64
7/8
57/64
29/32
59/64
Inch
mm
0.4100
0.4219
0.4250
0.4331
0.4375
0.4531
0.4600
0.4687
0.4724
0.4844
0.5000
0.5118
0.5156
0.5312
0.5469
0.5512
0.5625
0.5781
0.5906
0.5937
0.6094
0.6250
0.6299
0.6406
0.6500
0.6562
0.6620
0.6693
0.6719
0.6875
0.7031
0.7087
0.7187
0.7344
0.7435
0.7480
0.7500
0.7656
0.7717
0.7812
0.7874
0.7969
0.8125
0.8268
0.8281
0.8437
0.8594
0.8661
0.8750
0.8906
0.9055
0.9062
0.9219
10.4140
10.7156
10.7950
11.0000
11.1125
11.5094
11.6840
11.9062
12.0000
12.3031
12.7000
13.0000
13.0968
13.4937
13.8906
14.0000
14.2875
14.6844
15.0000
15.0812
15.4781
15.8750
16.0000
16.2719
16.5100
16.6687
16.8148
17.0000
17.0656
17.4625
17.8594
18.0000
18.2562
18.6532
18.8849
19.0000
19.0500
19.4469
19.6012
19.8433
20.0000
20.2402
20.6375
21.0000
21.0344
21.4312
21.8281
22.0000
22.2250
22.6219
23.0000
23.0187
23.4156
Fraction
15/16
61/64
31/32
63/64
1
1-1/4
1-1/2
1-3/4
2
2-1/4
2-1/2
2-3/4
3
3-1/4
3-1/2
3-3/4
4
4-1/4
4-1/2
4-3/4
5
5-1/2
Inch
0.9375
0.9449
0.9531
0.9687
0.9843
0.9844
1.0000
1.0236
1.0415
1.0480
1.0630
1.1025
1.1417
1.1812
1.2500
1.5000
1.5354
1.5748
1.6535
1.7500
1.7717
1.8898
1.9685
2.0000
2.0472
2.1654
2.2047
2.2500
2.3622
2.5000
2.5197
2.7500
2.8346
2.9528
3.0000
3.1496
3.2500
3.5000
3.5433
3.7500
3.9370
4.0000
4.2500
4.3307
4.5000
4.7244
4.7500
5.0000
5.5000
mm
23.8125
24.0000
24.2094
24.6062
25.0000
25.0031
25.4000
26.0000
26.4541
26.6192
27.0000
28.0000
29.0000
30.0000
31.7500
38.1000
39.0000
40.0000
42.0000
44.4500
45.0000
48.0000
50.0000
50.8000
52.0000
55.0000
56.0000
57.1500
60.0000
63.5000
64.0000
69.8500
72.0000
75.0000
76.2000
80.0000
82.5500
88.9000
90.0000
95.2500
100.0000
101.6000
107.9500
110.0000
114.3000
120.0000
120.6500
127.0000
139.7000
Thin Section Bearings
Self Lubicating Bearings
Spherical Bearings
See our listing in the Thomas Register
SEE OUR
CATALOG IN THE
CATALOG FILE SECTION
AND ON THE INTERNET
h t t p : / / w w w. n p b . t h o m a s re g i s t e r. c o m
Call us at 1-800-426-8038
for all your bearing needs.
INDUSTRIAL
AIRFRAME
TYPE
B
A
L
L
B
E
A
R
I
N
G
S
B
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
(Not intended for aircraft applications)
KP Series
BEARING
NUMBER
Single Row
Radial Type
BORE
O.D.
d
+.0000
-.0005
MINIMUM
CHAMFER
WIDTH
D
+.0000
-.0005
Bi
+.000
-.005
Bo
+.000
-.005
r1
+.015
-.000
BALLS
r2
+.015
-.000
NO.
THRUST
LOAD
LBS.
SIZE
STATIC
RADIAL
LOAD
LBS.
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Extra Light Inch
BASIC
PART
NUMBER
BORE
FRAC.
INCH
OUTSIDE DIAMETER
TOL.
FRAC.
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
OPEN
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
SEAL/SHIELD
KP 3L
.1900
.6250
.245
.203
.005
.010
10
1/8
700
1560
R2
1/8
.1250
-.0003
3/8
.3750
-.0004
.1562
.1562
.012
7
1/16
49
113
KP 3
.1900
.7774
.297
.270
.005
.022
12
1/8
900
1880
R3
3/16
.1875
-.0003
1/2
.5000
-.0004
.1562
.1960
.012
7
3/32
70
145
KP 4
.2500
.9014
.484
.335
.005
.032
11
5/32
1200
2680
R4
1/4
.2500
-.0003
5/8
.6250
-.0004
.1960
.1960
.012
7
1/8
195
385
KP 5
.3125
1.2500
.558
.375
.015
.032
9
1/4
2500
5620
R 4A
1/4
.2500
-.0003
3/4
.7500
-.0004
.2188
.2812
.016
6
9/54
150
320
KP 6
.3750
1.4375
.620
.469
.015
.032
10
9/32
3500
7910
R6
3/8
.3750
-.0003
7/8
.8750
-.0004
.2188
.2812
.016
7
5/32
305
570
KP 8
.5000
1.6875
.620
.500
.015
.044
10
3/8
5200
11800
R8
1/2
.5000
-.0003
1 1/8
1.1250
-.0004
.2500
.3125
.016
8
3/16
500
885
KP 10
.6250
1.9375
.620
.500
.015
.044
10
3/8
6200
14100
R 10
5/8
.6250
-.0003
1 3/8
1.3750
-.0005
.2812
.3438
.031
9
3/16
565
970
r2
Bo
45º
r1
45º
d
R 12
3/4
.7500
-.0004
1 5/8
1.6250
-.0005
.3125
.4375
.031
10
7/32
850
1265
R 14
7/8
.8750
-.0004
1 7/8
1.8750
-.0005
.3750
.5000
.031
10
1/4
1110
1735
R 16
1
1.0000
-.0004
2
2.0000
-.0005
.3750
.5000
.031
10
1/4
1110
1735
R 18
1 1/8
1.1250
-.0004
2 1/8
2.1250
-.0005
.3750
.5000
.031
11
1/4
1225
1840
R 20
1 1/4
1.2500
-.0005
2 1/4
2.2500
-.0005
.3750
.5000
.031
12
1/4
1335
1920
D
BORE
Equipped with Teflon® seals.
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
Bi
KPA Series
BEARING
NUMBER
Single Row
Radial Type
BORE
O.D.
d
+.0000
-.0005
D
+.0000
-.0005
MINIMUM
CHAMFER
WIDTH
Bi
+.000
-.005
Bo
+.000
-.005
r1
+.015
-.000
BALLS
r2
+.015
-.000
THRUST
LOAD
LBS.
NO.
SIZE
OUTSIDE DIAMETER
STATIC
RADIAL
LOAD
LBS.
KP 3AL
.1900
.5000
.237
.196
.005
.012
11
3/32
430
970
KP 3A
.1900
.6250
.297
.234
.005
.016
10
1/8
700
1560
KP 4A
.2500
.7500
.281
.219
.005
.016
12
1/8
900
1880
KP 5A
.3125
.8125
.297
.234
.015
.016
14
1/8
1000
2190
KP 6A
.3750
.8750
.313
.250
.015
.016
16
1/8
1100
2500
KP 8A
.5000
1.1250
.375
.313
.015
.016
16
5/32
1700
3910
KP10A
.6250
1.3750
.406
.344
.015
.032
14
7/32
3000
6700
r2
WIDTH
R4
OPEN
R4 Z
ONE SHIELD
R4 ZZ
TWO SHIELDS
R4 RS
ONE CONTACT
SEAL
R4 2RS
TWO CONTACT
SEALS
R4 NR
RETAINING RING
+ GROOVE ON O.D.
Bo
R Series
Industrial Airframe Type Bearings
L
R SERIES
Tel: 800.426.8038
Ball Bearings
A
45º
r1
45º
d
D
Equipped with Teflon® seals.
12
1
Bi
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
600 SERIES
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Extra Small
BORE
BASIC
PART
NUMBER
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
MM
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INDUSTRIAL
AIRFRAME
TYPE
B
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
Fax: 425.222.5950
Ball Bearings
Email: sales@nationalprecision.com
www.nationalprecision.com
(Not intended for aircraft applications)
B500 Series
Single Row
Torque Tube Type
BEARING
NUMBER
BORE
O.D.
TYPE
d
+.0007
-.0007
D
+.0000
-.0010
OPEN
INCH
SEALED
MINIMUM
CHAMFER
WIDTH
Bi
+.000
-.005
Bo
+.000
-.005
r1
r2
BALLS
NO.
THRUST
LOAD
LBS.
STATIC
RADIAL
LOAD
LBS.
DIA.
634
4
.1575
-.0003
16
.6299
-.0004
5
.1969
.012
6
1/8
165
330
B538
B538DD
.6250
1.0625
.281
.250
.015
.015
21
1/8
1500
3280
635
5
.1969
-.0003
19
.7480
-.0004
6
.2362
.012
7
1/8
195
385
B539
B539DD
.7500
1.1875
.281
.250
.015
.015
24
1/8
1700
3750
626
6
.2362
-.0003
19
.7480
-.0004
6
.2362
.012
7
1/8
195
385
B540
B540DD
.8750
1.3125
.281
.250
.015
.015
27
1/8
1900
4220
627
7
.2756
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
B541
B541DD
1.0625
1.5000
.281
.250
.015
.015
32
1/8
2200
5000
8
.3150
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
B542
B542DD
1.3125
1.7500
.281
.250
.015
.015
38
1/8
2700
5950
608 N2
608
7.932
.3123
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
B543
B543DD
1.5625
2.0000
.281
.250
.015
.015
44
1/8
3200
6880
608 N3
7.940
.3126
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
9
.3543
-.0003
26
1.0236
-.0004
8
.3150
.025
7
3/16
440
780
629
DD = Equipped with Teflon® coated fabric seal
D
d
BORE
r2
Bo
Bi
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
B500
Industrial Airframe Type Bearings
r1
B500DD
WIDTH
DW Series
OUTSIDE DIAMETER
BEARING
NUMBER
Double Row
Extra Wide Type
608
OPEN
608 Z
ONE SHIELD
608 ZZ
TWO SHIELDS
608 RS
ONE CONTACT
SEAL
608 2RS
TWO CONTACT
SEALS
608 NR
RETAINING RING
+ GROOVE ON O.D.
MINIMUM
CHAMFER
WIDTH
BORE
O.D.
d
+.0000
-.0005
D
+.0000
-.0005
Bi
+.000
-.005
Bo
+.000
-.005
r1
+.015
-.000
r2
+.015
-.000
THRUST
LOAD
LBS.
BALLS
NO.
STATIC
RADIAL
LOAD
LBS.
DIA.
DW4K2*
.2500
.6250
.562
.500
.005
.016
16
3/32
500
1400
DW4K*
.2500
.7500
.875
.750
.005
.016
14
9/64
900
2770
DW4
.2500
.7500
.875
.750
.005
.016
24
1/8
1240
3750
DW5
.3125
.8750
.938
.813
.005
.016
26
9/64
1600
5140
DW6
.3750
1.0625
1.188
1.063
.005
.016
24
3/16
2600
8440
600 Series
* Retainer type
Bo
r1
d
Equipped with Teflon® seals.
r2
2
D
11
Bi
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
S
V GROOVE
INDUSTRY
PART
NUMBER
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
BORE
O.D.
WIDTH
L1
L2
R
+.0000
–.0003
±.005
±.0000
–.0050
REF.
REF.
WILL
CLEAR
RADIUS
DYNAMIC RADIAL LOAD LBS.
Based on average life of 2500 hrs
GAGE
WIRE
DIA.
33.3
RPM
100
RPM
500
RPM
THRUST
LOAD
LBS.
1000
RPM
STATIC
RADIAL
LOAD
LBS.
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
6000 SERIES
Tel: 800.426.8038
Guide Wheel Bearings
NATIONAL
PART
NUMBER
B
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Extra Light
BASIC
PART
NUMBER
BORE
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
MM
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INCH
NW1
W1
.1875
.771
.3100
.314
.625
.012
.0937
350
245
145
112
65
245
6000
10
.3937
-.0003
26
1.0236
-.0004
8
.3150
.012
7
3/16
440
790
NW1X
W1X
.1875
.771
.3100
.314
.625
.012
.0937
350
245
145
112
65
245
6001
12
.4724
-.0003
28
1.1024
-.0004
8
.3150
.012
7
3/16
500
805
NW1SSX
NW2
NW2X
NW2SSX
NW3
NW3X
NW3SSX
W1SSX
1875
.771
.3100
.314
.625
.012
.0937
310
218
126
100
55
200
6002
15
.5906
-.0003
32
1.2598
-.0005
9
.3543
.012
9
3/16
565
965
W2
.3750
1.210
.4375
.530
1.000
.012
.1250
734
487
288
227
122
610
6003
17
.6693
-.0003
35
1.3780
-.0005
10
.3937
.012
10
3/16
625
1040
W2X
.3750
1.210
.4375
.530
1.000
.012
.1250
734
487
288
227
122
610
6004
20
.7874
-.0004
42
1.6535
-.0005
12
.4724
.024
8
1/4
1000
1500
W2SSX
.3750
1.210
.4375
.530
1.000
.012
.1250
562
390
230
183
90
455
6005
25
.9843
-.0004
47
1.8504
-.0005
12
.4724
.024
10
1/4
1115
1730
W3
.4724
1.803
.6250
.640
1.500
.024
.1875
1338
925
543
435
535
910
6006
30
1.1811
-.0004
55
2.1654
-.0005
13
.5118
.039
11
9/32
1550
2280
W3X
.4724
1.803
.6250
.640
1.500
.024
.1875
1338
925
543
435
535
910
6007
35
1.3780
-.0005
62
2.4409
-.0005
14
.5512
.039
11
5/16
1905
2760
W3SSX
.4724
1.803
.6250
.640
1.500
.024
.1875
1070
745
434
349
428
705
6008
40
1.5748
-.0005
68
2.6772
-.0005
15
.5906
.039
13
5/16
2085
3050
NW4
W4
.5906
2.360
.7500
.878
2.000
.024
.2500
2055
1405
815
650
655
1235
6009
45
1.7717
-.0005
75
2.9528
-.0005
16
.6299
.039
13
11/32
2735
3620
NW4X
W4X
.5906
2.360
.7500
.878
2.000
.024
.2500
2055
1405
815
650
655
1235
6010
50
1.9685
-.0005
80
3.1496
-.0005
16
.6299
.039
14
11/32
2945
3760
W4SSX
.5906
2.360
.7500
.878
2.000
.024
.2500
1593
1129
648
520
510
955
NW4SSX
TWO SHIELDS
TWO SEALS
V Groove Guide Wheel Bearings
GAGE WIRE
6011
55
2.1654
-.0006
90
2.5433
-.0006
18
.7087
.039
13
13/32
3820
4870
6012
60
2.3622
-.0006
95
3.7402
-.0006
18
.7087
.039
14
13/32
4115
5070
O.D.
6013
65
2.5591
-.0006
100
3.9370
-.0006
18
.7087
.039
15
12/32
4405
5260
BORE
6014
70
2.7559
-.0006
110
4.3307
-.0006
20
.7874
.039
14
15/32
5475
6560
R
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
WIDTH
NW1
SAE: 52100
NW1X
–
AISI-440C
NW1SSX
BORE
WIDTH
L1
L2
OUTSIDE DIAMETER
V GROOVE
Guide Wheel Bushings
NATIONAL
PART NO.
ADJUSTABLE
INDUSTRY NATIONAL
PART NO. PART NO.
NB1
N1
NBX1
A
INDUSTRY
PART NO.
NX1
B
.550
C
.300
D
.1873
7/16
E
.140
NBX
SERIES
F
NB2
N2
NBX2
NX2
.706
.425
.3748
9/16
.250
.024
N3
NBX3
NX3
.990
.615
.4722
3/4
.312
.042
NB4
N4
NBX4
NX4
1.177
.740
.5904
7/8
.375
.060
6000 ZZ
TWO SHIELDS
6000 RS
ONE CONTACT
SEAL
6000 2RS
TWO CONTACT
SEALS
6000 NR
RETAINING RING
+ GROOVE ON O.D.
NBX AJUSTABLE BUSHING
A
A
B
E
B
E
6000 Z
ONE SHIELD
.012
NB3
NB CONCENTRIC BUSHING
6000
OPEN
6000 Series
CONCENTRIC
F
D
C
C
D
10
3
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
1600 SERIES
S
B
A
L
L
B
E
A
R
I
N
G
S
Interchange
BORE
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
MM
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Email: sales@nationalprecision.com
www.nationalprecision.com
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
Fax: 425.222.5950
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INCH
6200
10
.3937
-.0003
30
1.1811
-.0004
9
.3543
.025
8
3/16
500
885
6201
12
.4724
-.0003
32
1.2598
-.0005
10
.3937
.025
7
7/32
595
1055
6202
15
.5906
-.0003
35
1.3780
-.0005
11
.4331
.025
8
7/32
675
1180
6203
17
.6693
-.0003
40
1.5748
-.0005
12
.4724
.025
8
1/4
890
1500
6204
20
.7874
-.0004
47
1.8504
-.0005
14
.5512
.040
8
5/16
1390
2220
6205
25
.9843
-.0004
52
2.0472
-.0005
15
.5906
.040
9
5/16
1565
2415
6206
30
1.1811
-.0004
62
2.4409
-.0005
16
.6299
.040
9
3/8
2255
3360
6207
35
1.3780
-.0005
72
2.8346
-.0005
17
.6693
.040
9
7/16
3070
4430
6208
40
1.5748
-.0005
80
3.1496
-.0005
18
.7087
.040
9
15/32
3520
5035
6209
45
1.7717
-.0005
85
3.3465
-.0005
19
.7480
.040
9
1/2
4005
5655
6210
50
1.9685
-.0005
90
3.5433
-.0006
20
.7874
.040
10
1/2
4450
6065
6211
55
2.1654
-.0006
100
3.9370
-.0006
21
.8268
.060
10
9/16
5630
7500
6212
60
2.3622
-.0006
110
4.3307
-.0006
22
.8661
.060
10
5/8
6955
9065
6213
65
2.5591
-.0006
120
4.7244
-.0006
23
.9055
.060
10
21/32
7665
9900
6214
70
2.7559
-.0006
125
4.9213
-.0008
24
.9449
.060
10
11/16
8415
10715
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
BORE
WIDTH
OUTSIDE DIAMETER
6200 Series
6200
OPEN
6200 Z
ONE SHIELD
6200 ZZ
TWO SHIELDS
6200 RS
ONE CONTACT
SEAL
6200 2RS
TWO CONTACT
SEALS
6200 NR
RETAINING RING
+ GROOVE ON O.D.
NATIONAL
PRECISION
BEARING
GENERAL
NICE/SKF
SCHATZ
NATIONAL
PRECISION
BEARING
GENERAL
NICE/SKF
SCHATZ
1601
1601 ZZ
1601 2RS
21103-00
21103-77
21103-78
1601NS
1601DS
1601DC
BR 01
BR 7701
BR 9901A
1623
1623 ZZ
1623 2RS
22210-00
22210-77
22210-88
1623NS
1623DS
1623DC
BR 23
BR 7723
BR 9923A
1602
1602 ZZ
1602 2RS
21104-00
21104-77
21104-88
1602NS
1602DS
1602DC
BR 02
BR 7702
BR 9902A
1628
1628 ZZ
1628 2RS
22610-00
22610-77
22610-88
1628NS
1628DS
1628DC
BR 28
BR 7728
BR 9928A
1603
1603 ZZ
1603 2RS
21405-00
21405-77
21405-88
1603NS
1603DS
1603DC
BR 03
BR 7703
BR 9903A
1630
1630 ZZ
1630 2RS
22612-00
22612-77
22612-88
1630NS
1630DS
1630DC
BR 30
BR 7730
BR 9930A
1604
1604 ZZ
1604 2RS
21406-00
21406-77
21406-88
1604NS
1604DS
1604DC
BR 04
BR 7704
BR 9904A
1633
1633 ZZ
1633 2RS
22810-00
22810-77
22810-88
1633NS
1633DS
1633DC
BR 33
BR 7733
BR 9933A
1605
1605 ZZ
1605 2RS
21505-00
21505-77
21505-88
1605NS
1605DS
1605DC
BR 05
BR 7705
BR 9905A
1635
1635 ZZ
1635 2RS
22812-00
22812-77
22812-88
1635NS
1635DS
1635DC
BR 35
BR 7735
BR 9935A
1606
1606 ZZ
1606 2RS
21506-00
21506-77
21506-88
1606NS
1606DS
1606DC
BR 06
BR 7706
BR 9906A
1638
1638 ZZ
1638 2RS
23212-00
23212-77
23212-88
1638NS
1638DS
1638DC
BR 38
BR 7738
BR 9938A
1607
1607 ZZ
1607 2RS
21507-00
21507-77
21507-88
1607NS
1607DS
1607DC
BR 07
BR 7707
BR 9907A
1640
1640 ZZ
1640 2RS
23214-00
23214-77
23214-88
1640NS
1640DS
1640DC
BR 40
BR 7740
BR 9940A
1614
1614 ZZ
1614 2RS
21806-00
21806-77
21806-88
1614NS
1614DS
1614DC
BR 14
BR 7714
BR 9914A
1641
1641 ZZ
1641 2RS
23216-00
23216-77
23216-88
1641NS
1641DS
1641DC
BR 41
BR 7741
BR 9941A
1615
1615 ZZ
1615 2RS
21807-00
21807-77
21807-88
1615NS
1615DS
1615DC
BR 15
BR 7715
BR 9915A
1652
1652 ZZ
1652 2RS
24018-00
24018-77
24018-88
1652NS
1652DS
1652DC
BR 52
BR 7752
BR 9952A
1616
1616 ZZ
1616 2RS
21808-00
21808-77
21808-88
1616NS
1616DS
1616DC
BR 16
BR 7716
BR 9916A
1654
1654 ZZ
1654 2RS
24020-00
24020-77
24020-88
1654NS
1654DS
1654DC
BR 54
BR 7754
BR 9954A
1620
1620 ZZ
1620 2RS
22207-00
22207-77
22207-88
1620NS
1620DS
1620DC
BR 20
BR 7720
BR 9920A
1657
1657 ZZ
1657 2RS
24120-00
24120-77
24120-88
1657NS
1657DS
1657DC
BR 57
BR 7757
BR 9957A
1621
1621 ZZ
1621 2RS
22208-00
22208-77
22208-88
1621NS
1621DS
1621DC
BR 21
BR 7721
BR 9921A
1658
1658 ZZ
1658 2RS
24121-00
24121-77
24121-88
1658NS
1658DS
1658DC
BR 58
BR 7758
BR 9958A
1622
1622 ZZ
1622 2RS
22209-00
22209-77
22209-88
1622NS
1622DS
1622DC
BR 22
BR 7722
BR 9922A
Interchange
Light Series
BASIC
PART
NUMBER
Tel: 800.426.8038
Tel: 800.426.8038
6200 SERIES
4
9
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
1600 Series
BORE
Email: sales@nationalprecision.com
www.nationalprecision.com
FRACTION
OUTSIDE DIAMETER
WIDTH
TOL. +.0000
-.0050
INCHES
FRACTION
LOAD RATINGS
RADIUS
INCHES
TOL. +.0000
-.0050
INCHES
FRACTION
DYNAMIC
STATIC
BEARING
WEIGHT
(lbs.)
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
6300 SERIES
Fax: 425.222.5950
Commercial Inch
BASIC
PART
NUMBER
B
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Medium
BASIC
PART
NUMBER
BORE
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
INCHES
MM
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INCH
1601
3/16
.1875
11/16
.6875
*1/4
.2500
.012
294
146
.009
6300
10
.3937
-.0003
35
1.3780
-.0005
11
.4331
.025
6
9/32
845
1430
1602
1/4
.2500
11/16
.6875
*1/4
.2500
.012
294
146
.014
6301
12
.4724
-.0003
37
1.4567
-.0005
12
.4724
.040
6
5/16
1045
1655
1603
5/16
.3125
7/8
.8750
**9/32
.2812
.012
464
228
.021
6302
15
.5906
-.0003
42
1.6535
-.0005
13
.5118
.040
7
5/16
1215
1975
1604
3/8
.3750
7/8
.8750
**9/32
.2812
.015
464
228
.019
6303
17
.6693
-.0003
47
1.8504
-.0005
14
.5512
.040
7
11/32
1470
2335
1605
5/16
.3125
29/32
.9062
5/16
.3125
.012
464
228
.037
6304
20
.7874
-.0004
52
2.0472
-.0005
15
.5906
.040
7
3/8
1750
2730
1606
3/8
.3750
29/32
.9062
5/16
.3125
.015
464
228
.048
6305
25
.9843
-.0004
62
2.4409
-.0005
17
.6693
.040
7
7/16
2385
3690
1607
7/16
.4375
29/32
.9062
5/16
.3125
.015
400
229
.049
6306
30
1.1811
-.0004
72
2.8346
-.0005
19
.7480
.040
8
15/32
3130
4605
1614
3/8
.3750
1 1/8
1.1250
3/8
.3750
.025
400
229
.077
6307
35
1.3780
-.0005
80
3.1496
-.0005
21
.8268
.060
8
17/32
4020
5775
1615
7/16
.4375
1 1/8
1.1250
3/8
.3750
.025
400
229
.071
6308
40
1.5748
-.0005
90
3.5433
-.0006
23
.9055
.060
8
19/32
5020
7060
1616
1/2
.5000
1 1/8
1.1250
3/8
.3750
.025
400
229
.066
6309
45
1.7717
-.0005
100
3.9370
-.0006
25
.9843
.060
8
11/16
7000
9120
6310
50
1.9685
-.0005
110
4.3307
-.0006
27
1.0630
.080
8
3/4
8010
10750
1620
7/16
.4375
1 3/8
1.3750
7/16
.4375
.025
600
354
.100
1621
1/2
.5000
1 3/8
1.3750
7/16
.4375
.025
600
354
.106
6311
55
2.1654
-.0006
120
4.7244
-.0006
29
1.1417
.080
8
13/16
9400
12410
1622
9/16
.5625
1 3/8
1.3750
7/16
.4375
.025
600
354
.101
6312
60
2.3622
-.0006
130
5.1181
-.0008
31
1.2205
.080
8
7/8
10900
14180
1623
5/8
.6250
1 3/8
1.3750
7/16
.4375
.025
600
354
.088
6313
65
2.5591
-.0006
140
5.5118
-.0008
33
1.2292
.080
8
15/16
12515
16050
6314
70
2.7559
-.0006
150
5.9055
-.0008
35
1.3780
.080
8
1
14240
18025
1628
5/8
.6250
1 5/8
1.6250
1/2
.5000
.025
738
454
.159
1630
3/4
.7500
1 5/8
1.6250
1/2
.5000
.025
738
454
.143
1633
5/8
.6250
1 3/4
1.7500
1/2
.5000
.025
738
454
.203
1635
3/4
.7500
1 3/4
1.7500
1/2
.5000
.025
738
454
.187
1638
3/4
.7500
2
2.0000
9/16
.5625
.035
1100
709
.265
1640
7/8
.8750
2
2.0000
9/16
.5625
.035
1100
709
.247
1641
1
1.0000
2
2.0000
9/16
.5625
.035
1100
709
.221
1652
1 1/8
1.1250
2 1/2
2.5000
5/8
.6250
.035
1306
857
.463
1654
1 1/4
1.2500
2 1/2
2.5000
5/8
.6250
.035
1306
857
.419
1657
1 1/4
1.2500
2 9/16
2.5625
11/16
.6875
.035
1528
1021
.474
1658
1 5/16
1.3125
2 9/16
2.5625
11/16
.6875
.035
1528
1021
.441
BORE
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
WIDTH
OUTSIDE DIAMETER
* Width RS & 2RS = 5/16
**Width RS & 2RS = 11/32
BORE
6300
OPEN
1600 Series
WIDTH
6300 Z
ONE SHIELD
6300 ZZ
TWO SHIELDS
6300 RS
ONE CONTACT
SEAL
6300 2RS
TWO CONTACT
SEALS
6300 NR
RETAINING RING
+ GROOVE ON O.D.
6300 Series
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
OUTSIDE DIAMETER
1600
OPEN
1600 Z
ONE SHIELD
1600 ZZ
TWO SHIELDS
1600 RS
ONE CONTACT
SEAL
1600 2RS
TWO CONTACT
SEALS
1600 NR
RETAINING RING
+ GROOVE ON O.D.
8
5
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
6000, 6200,
& 6300 SERIES
B
A
L
L
B
E
A
R
I
N
G
S
B
Interchange
Tel: 800.426.8038
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
SPECIALS
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Numerous special applications
National
Precision
Bearing
Interchange / Internal Clearance
A
S.K.F.
Koyo
Nachi
B.C.A
Fafnir
Torrington Federal
Hoover
NTN
Norma
New
Hoffman Departure
M.R.C.
FAG
NSK
ISO
Series
Steyr
6000
6000
6000
6000
100
9100 K
9100
100
6000
100 KS
6100
3 L00
6000
6000
6000
6000
6000 Z
6000 Z
6000 Z
6000 Z
100 S
9100 KD
9100 F
7100
6000 Z
100 KSF
6100 P
73 L00
6000 Z
6000 Z
6000 Z
6000 Z
6000 ZZ
6000-2Z
6000-2Z
6000-2Z
100 SS
9100 KDD
9100 FF
77100
6000 ZZ
100 KSFF
6100 PP
773 L00
6000 ZZ
6000 ZZ
6000-2Z
6000 ZZ
6000 RS
6000 RS
6000 RS
6000 NSL
100 D
9100P
9100 R
9100
6000 L
100 KSZ
100 N
93 LOO
6000 RS
6000 V
6000 G
6000 RS
6000-2RS
6000-2RS
6000-2RS
6000-2NSL
100 DD
9100 PP
9100 RR
99100
6000 LL
100 KSZZ
100 NN
993 LOO
6000-2RS
6000 VV
6000-2G
6000-2RS
6000 NR
6000 NR
6000 NR
6000 ZNR
6000 ZNR
6000 ZNR
6000 NR
6000 NR
6000 NR
6000 NR
100 L
9100 KG
9100 CG
100 G
6000 NR
100 KSG
4100
43 LOO
6000 ZNR
6000 ZNR
6000 ZNR
6000ZNR
100SL
9100 KDG
9100 GF
7100 G
6000 ZNR
100 KSFG
4100 P
473 LOO
6000 N &
Snap-Ring
6000 ZN &
Snap-Ring
6200
6200
6200
6200
200
200 K
1200
200
6200
200 S
200
3200
6200
6200
6200
6200
6200 Z
6200 Z
6200 Z
6200 Z
200 S
200 KD
1200 F
7200
6200 Z
200 SF
200 P
7500
6200 Z
6200 Z
6200 Z
6200 Z
6200 ZZ
6200-2Z
6200-2Z
6200-2Z
200 SS
200 KDD
1200 FF
77200
6200-2Z
200 SFF
200 PP
77500
6200 ZZ
6200-2Z
6200-2Z
6200 ZZ
6200 RS
6200 RS
6200 RS
6200 NSL
200 D
200 P
1200 R
9200
6200 L
200 SZ
200 N
9500
6200 RS
6200 V
6200 G
6200 RS
6200-2RS
6200-2RS
6200-2RS
6200-2NSL
200 DD
200 PP
1200 RR
99200
6200 LL
200 SZZ
200 NN
99500
6200-2RS
6200 VV
6200-2G
6200-2RS
6200 NR
6200 NR
6200 NR
6200 NR
200 L
200 KG
1200 CG
200 G
6200 NR
200 SG
4200
43200
6200 NR
6200 NR
6200 NR
6200 ZNR
6200 ZNR
6200 ZNR
6200 ZNR
200 LS
200 KDG
1200 GF
7200 G
6200 ZNR
200 SFG
4200 P
47500
6200 N &
Snap-Ring
6200 ZN &
Snap-Ring
6200 ZNR
6200 ZNR
6200 ZNR
6300
6300
6300
6300
300
300 K
1300
300
6300
300 S
300
3300
6300
6300
6300
6300
6300 Z
6300 Z
6300 Z
6300 Z
300 S
300 KD
1300 F
7300
6300 Z
300 SF
300 P
7600
6300 Z
6300 Z
6300 Z
6300 Z
6300 ZZ
6300-2Z
6300-2Z
6300-2Z
300 SS
300 KDD
1300 FF
77300
6300-2Z
300 SFF
300 PP
77600
6300 ZZ
6300-2Z
6300-2Z
6300 ZZ
6300 RS
6300 RS
6300 RS
6300 NSL
300 D
300 P
1300 R
9300
6300 L
300 SZ
300 N
9600
6300 RS
6300 V
6300 G
6300 RS
6300-2RS
6300-2RS
6300-2RS
6300-2NSL
300 DD
300 PP
1300 RR
99300
6300 LL
300 SZZ
300 NN
99600
6300-2RS
6300 VV
6300-2G
6300-2RS
6300 NR
6300 NR
6300 NR
6300 NR
300 L
300 KG
1300 CG
300 G
6300 NR
300 SG
4300
43300
6300 NR
6300 NR
6300 NR
6300 ZNR
6300 ZNR
6300 ZNR
6300 ZNR
300 SL
300 KDG
1300 GF
7300 G
6300 ZNR
300 SFG
4300 P
47600
6300 N &
Snap-Ring
6300 ZN &
Snap-Ring
6300 ZNR
6300 ZNR
6300 ZNR
require non-standard bearings. A
few of the more popular sizes are
listed to the right. A wide variety
of additional Specials are available
upon request.
PART NUMBER
DESCRIPTION
6201 ZZ-1/2
6201 ZZ with a .500 bore
6201-2RS-1/2
6201-2RS with a .500 bore
6201 ZZ-13
6201 ZZ with a 13mm bore
6202-2RS-13
6202-2RS with a 13mm bore
6202 ZZ-5/8
6202 ZZ with a .625 bore
6202 ZZ-16
6202 ZZ with a 16mm bore
99502H
6202-2RS with a .625 bore and a 1.375 O.D.
499502H
6202-2RS with a .625 bore, 1.375 O.D. and a Snap Ring on the O.D
6203 ZZ-5/8
6203 ZZ with a .625 bore
6203-2RS-5/8
6203-2RS with a .625 bore
7109
6202 Z with a 9mm bore
Applications that require such
things as high temperature seals,
RADIAL INTERNAL
CLEARANCE OPTIONS
Single Row
Deep Groove Ball Bearings
6
P
R
E
C
I
S
I
O
N
be supplied.
RADIAL INTERNAL CLEARANCE (INCH)
BORE DIAMETER
d (METRIC)
Over
non-metallic retainers, etc. can
C/2
Incl.
min
max
STANDARD
min
max
C/3
min
C/4
max
min
Consult National for engineering
C/5
max
min
max
2.5
6
.0000
.0003
.0001
.0005
.0003
.0009
.0005
.0012
.0008
.0014
6
10
.0000
.0003
.0001
.0005
.0003
.0009
.0005
.0012
.0009
.0018
10
18
.0000
.00035
.0001
.0007
.0004
.0010
.0007
.0013
.0010
.0019
18
24
.0000
.0004
.0002
.0008
.0005
.0011
.0008
.0014
.0011
.0018
24
30
.00005
.00045
.0002
.0008
.0005
.0011
.0009
.0016
.0012
.0021
30
40
.00005
.00045
.0002
.0009
.0006
.0013
.0011
.0018
.0015
.0025
40
50
.00005
.00045
.0002
.0009
.0007
.0014
.0012
.0020
.0017
.0029
50
65
.00005
.0006
.0003
.0011
.0009
.0017
.0015
.0024
.0021
.0035
65
80
.00005
.0006
.0004
.0012
.0010
.0020
.0018
.0028
.0025
.0041
80
100
.00005
.0007
.0005
.0014
.0012
.0023
.0021
.0033
.0030
.0047
B
A
L
L
B
E
A
R
I
N
G
S
assistance at 1-800-426-8038.
Specials
Radial Internal
Clearance
C/1 - Internal Clearance is smaller than C/2.
C/2 - Internal Clearance is smaller than STANDARD.
STANDARD - No clearance marking is indicated on the bearing or packaging.
C/3 - Internal Clearance larger than STANDARD.
C/4 - Internal Clearance larger than C/3.
C/5 - Internal Clearance larger than C/4.
7
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
6000, 6200,
& 6300 SERIES
B
A
L
L
B
E
A
R
I
N
G
S
B
Interchange
Tel: 800.426.8038
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
SPECIALS
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Numerous special applications
National
Precision
Bearing
Interchange / Internal Clearance
A
S.K.F.
Koyo
Nachi
B.C.A
Fafnir
Torrington Federal
Hoover
NTN
Norma
New
Hoffman Departure
M.R.C.
FAG
NSK
ISO
Series
Steyr
6000
6000
6000
6000
100
9100 K
9100
100
6000
100 KS
6100
3 L00
6000
6000
6000
6000
6000 Z
6000 Z
6000 Z
6000 Z
100 S
9100 KD
9100 F
7100
6000 Z
100 KSF
6100 P
73 L00
6000 Z
6000 Z
6000 Z
6000 Z
6000 ZZ
6000-2Z
6000-2Z
6000-2Z
100 SS
9100 KDD
9100 FF
77100
6000 ZZ
100 KSFF
6100 PP
773 L00
6000 ZZ
6000 ZZ
6000-2Z
6000 ZZ
6000 RS
6000 RS
6000 RS
6000 NSL
100 D
9100P
9100 R
9100
6000 L
100 KSZ
100 N
93 LOO
6000 RS
6000 V
6000 G
6000 RS
6000-2RS
6000-2RS
6000-2RS
6000-2NSL
100 DD
9100 PP
9100 RR
99100
6000 LL
100 KSZZ
100 NN
993 LOO
6000-2RS
6000 VV
6000-2G
6000-2RS
6000 NR
6000 NR
6000 NR
6000 ZNR
6000 ZNR
6000 ZNR
6000 NR
6000 NR
6000 NR
6000 NR
100 L
9100 KG
9100 CG
100 G
6000 NR
100 KSG
4100
43 LOO
6000 ZNR
6000 ZNR
6000 ZNR
6000ZNR
100SL
9100 KDG
9100 GF
7100 G
6000 ZNR
100 KSFG
4100 P
473 LOO
6000 N &
Snap-Ring
6000 ZN &
Snap-Ring
6200
6200
6200
6200
200
200 K
1200
200
6200
200 S
200
3200
6200
6200
6200
6200
6200 Z
6200 Z
6200 Z
6200 Z
200 S
200 KD
1200 F
7200
6200 Z
200 SF
200 P
7500
6200 Z
6200 Z
6200 Z
6200 Z
6200 ZZ
6200-2Z
6200-2Z
6200-2Z
200 SS
200 KDD
1200 FF
77200
6200-2Z
200 SFF
200 PP
77500
6200 ZZ
6200-2Z
6200-2Z
6200 ZZ
6200 RS
6200 RS
6200 RS
6200 NSL
200 D
200 P
1200 R
9200
6200 L
200 SZ
200 N
9500
6200 RS
6200 V
6200 G
6200 RS
6200-2RS
6200-2RS
6200-2RS
6200-2NSL
200 DD
200 PP
1200 RR
99200
6200 LL
200 SZZ
200 NN
99500
6200-2RS
6200 VV
6200-2G
6200-2RS
6200 NR
6200 NR
6200 NR
6200 NR
200 L
200 KG
1200 CG
200 G
6200 NR
200 SG
4200
43200
6200 NR
6200 NR
6200 NR
6200 ZNR
6200 ZNR
6200 ZNR
6200 ZNR
200 LS
200 KDG
1200 GF
7200 G
6200 ZNR
200 SFG
4200 P
47500
6200 N &
Snap-Ring
6200 ZN &
Snap-Ring
6200 ZNR
6200 ZNR
6200 ZNR
6300
6300
6300
6300
300
300 K
1300
300
6300
300 S
300
3300
6300
6300
6300
6300
6300 Z
6300 Z
6300 Z
6300 Z
300 S
300 KD
1300 F
7300
6300 Z
300 SF
300 P
7600
6300 Z
6300 Z
6300 Z
6300 Z
6300 ZZ
6300-2Z
6300-2Z
6300-2Z
300 SS
300 KDD
1300 FF
77300
6300-2Z
300 SFF
300 PP
77600
6300 ZZ
6300-2Z
6300-2Z
6300 ZZ
6300 RS
6300 RS
6300 RS
6300 NSL
300 D
300 P
1300 R
9300
6300 L
300 SZ
300 N
9600
6300 RS
6300 V
6300 G
6300 RS
6300-2RS
6300-2RS
6300-2RS
6300-2NSL
300 DD
300 PP
1300 RR
99300
6300 LL
300 SZZ
300 NN
99600
6300-2RS
6300 VV
6300-2G
6300-2RS
6300 NR
6300 NR
6300 NR
6300 NR
300 L
300 KG
1300 CG
300 G
6300 NR
300 SG
4300
43300
6300 NR
6300 NR
6300 NR
6300 ZNR
6300 ZNR
6300 ZNR
6300 ZNR
300 SL
300 KDG
1300 GF
7300 G
6300 ZNR
300 SFG
4300 P
47600
6300 N &
Snap-Ring
6300 ZN &
Snap-Ring
6300 ZNR
6300 ZNR
6300 ZNR
require non-standard bearings. A
few of the more popular sizes are
listed to the right. A wide variety
of additional Specials are available
upon request.
PART NUMBER
DESCRIPTION
6201 ZZ-1/2
6201 ZZ with a .500 bore
6201-2RS-1/2
6201-2RS with a .500 bore
6201 ZZ-13
6201 ZZ with a 13mm bore
6202-2RS-13
6202-2RS with a 13mm bore
6202 ZZ-5/8
6202 ZZ with a .625 bore
6202 ZZ-16
6202 ZZ with a 16mm bore
99502H
6202-2RS with a .625 bore and a 1.375 O.D.
499502H
6202-2RS with a .625 bore, 1.375 O.D. and a Snap Ring on the O.D
6203 ZZ-5/8
6203 ZZ with a .625 bore
6203-2RS-5/8
6203-2RS with a .625 bore
7109
6202 Z with a 9mm bore
Applications that require such
things as high temperature seals,
RADIAL INTERNAL
CLEARANCE OPTIONS
Single Row
Deep Groove Ball Bearings
6
P
R
E
C
I
S
I
O
N
be supplied.
RADIAL INTERNAL CLEARANCE (INCH)
BORE DIAMETER
d (METRIC)
Over
non-metallic retainers, etc. can
C/2
Incl.
min
max
STANDARD
min
max
C/3
min
C/4
max
min
Consult National for engineering
C/5
max
min
max
2.5
6
.0000
.0003
.0001
.0005
.0003
.0009
.0005
.0012
.0008
.0014
6
10
.0000
.0003
.0001
.0005
.0003
.0009
.0005
.0012
.0009
.0018
10
18
.0000
.00035
.0001
.0007
.0004
.0010
.0007
.0013
.0010
.0019
18
24
.0000
.0004
.0002
.0008
.0005
.0011
.0008
.0014
.0011
.0018
24
30
.00005
.00045
.0002
.0008
.0005
.0011
.0009
.0016
.0012
.0021
30
40
.00005
.00045
.0002
.0009
.0006
.0013
.0011
.0018
.0015
.0025
40
50
.00005
.00045
.0002
.0009
.0007
.0014
.0012
.0020
.0017
.0029
50
65
.00005
.0006
.0003
.0011
.0009
.0017
.0015
.0024
.0021
.0035
65
80
.00005
.0006
.0004
.0012
.0010
.0020
.0018
.0028
.0025
.0041
80
100
.00005
.0007
.0005
.0014
.0012
.0023
.0021
.0033
.0030
.0047
B
A
L
L
B
E
A
R
I
N
G
S
assistance at 1-800-426-8038.
Specials
Radial Internal
Clearance
C/1 - Internal Clearance is smaller than C/2.
C/2 - Internal Clearance is smaller than STANDARD.
STANDARD - No clearance marking is indicated on the bearing or packaging.
C/3 - Internal Clearance larger than STANDARD.
C/4 - Internal Clearance larger than C/3.
C/5 - Internal Clearance larger than C/4.
7
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
1600 Series
BORE
Email: sales@nationalprecision.com
www.nationalprecision.com
FRACTION
OUTSIDE DIAMETER
WIDTH
TOL. +.0000
-.0050
INCHES
FRACTION
LOAD RATINGS
RADIUS
INCHES
TOL. +.0000
-.0050
INCHES
FRACTION
DYNAMIC
STATIC
BEARING
WEIGHT
(lbs.)
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
6300 SERIES
Fax: 425.222.5950
Commercial Inch
BASIC
PART
NUMBER
B
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Medium
BASIC
PART
NUMBER
BORE
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
INCHES
MM
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INCH
1601
3/16
.1875
11/16
.6875
*1/4
.2500
.012
294
146
.009
6300
10
.3937
-.0003
35
1.3780
-.0005
11
.4331
.025
6
9/32
845
1430
1602
1/4
.2500
11/16
.6875
*1/4
.2500
.012
294
146
.014
6301
12
.4724
-.0003
37
1.4567
-.0005
12
.4724
.040
6
5/16
1045
1655
1603
5/16
.3125
7/8
.8750
**9/32
.2812
.012
464
228
.021
6302
15
.5906
-.0003
42
1.6535
-.0005
13
.5118
.040
7
5/16
1215
1975
1604
3/8
.3750
7/8
.8750
**9/32
.2812
.015
464
228
.019
6303
17
.6693
-.0003
47
1.8504
-.0005
14
.5512
.040
7
11/32
1470
2335
1605
5/16
.3125
29/32
.9062
5/16
.3125
.012
464
228
.037
6304
20
.7874
-.0004
52
2.0472
-.0005
15
.5906
.040
7
3/8
1750
2730
1606
3/8
.3750
29/32
.9062
5/16
.3125
.015
464
228
.048
6305
25
.9843
-.0004
62
2.4409
-.0005
17
.6693
.040
7
7/16
2385
3690
1607
7/16
.4375
29/32
.9062
5/16
.3125
.015
400
229
.049
6306
30
1.1811
-.0004
72
2.8346
-.0005
19
.7480
.040
8
15/32
3130
4605
1614
3/8
.3750
1 1/8
1.1250
3/8
.3750
.025
400
229
.077
6307
35
1.3780
-.0005
80
3.1496
-.0005
21
.8268
.060
8
17/32
4020
5775
1615
7/16
.4375
1 1/8
1.1250
3/8
.3750
.025
400
229
.071
6308
40
1.5748
-.0005
90
3.5433
-.0006
23
.9055
.060
8
19/32
5020
7060
1616
1/2
.5000
1 1/8
1.1250
3/8
.3750
.025
400
229
.066
6309
45
1.7717
-.0005
100
3.9370
-.0006
25
.9843
.060
8
11/16
7000
9120
6310
50
1.9685
-.0005
110
4.3307
-.0006
27
1.0630
.080
8
3/4
8010
10750
1620
7/16
.4375
1 3/8
1.3750
7/16
.4375
.025
600
354
.100
1621
1/2
.5000
1 3/8
1.3750
7/16
.4375
.025
600
354
.106
6311
55
2.1654
-.0006
120
4.7244
-.0006
29
1.1417
.080
8
13/16
9400
12410
1622
9/16
.5625
1 3/8
1.3750
7/16
.4375
.025
600
354
.101
6312
60
2.3622
-.0006
130
5.1181
-.0008
31
1.2205
.080
8
7/8
10900
14180
1623
5/8
.6250
1 3/8
1.3750
7/16
.4375
.025
600
354
.088
6313
65
2.5591
-.0006
140
5.5118
-.0008
33
1.2292
.080
8
15/16
12515
16050
6314
70
2.7559
-.0006
150
5.9055
-.0008
35
1.3780
.080
8
1
14240
18025
1628
5/8
.6250
1 5/8
1.6250
1/2
.5000
.025
738
454
.159
1630
3/4
.7500
1 5/8
1.6250
1/2
.5000
.025
738
454
.143
1633
5/8
.6250
1 3/4
1.7500
1/2
.5000
.025
738
454
.203
1635
3/4
.7500
1 3/4
1.7500
1/2
.5000
.025
738
454
.187
1638
3/4
.7500
2
2.0000
9/16
.5625
.035
1100
709
.265
1640
7/8
.8750
2
2.0000
9/16
.5625
.035
1100
709
.247
1641
1
1.0000
2
2.0000
9/16
.5625
.035
1100
709
.221
1652
1 1/8
1.1250
2 1/2
2.5000
5/8
.6250
.035
1306
857
.463
1654
1 1/4
1.2500
2 1/2
2.5000
5/8
.6250
.035
1306
857
.419
1657
1 1/4
1.2500
2 9/16
2.5625
11/16
.6875
.035
1528
1021
.474
1658
1 5/16
1.3125
2 9/16
2.5625
11/16
.6875
.035
1528
1021
.441
BORE
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
WIDTH
OUTSIDE DIAMETER
* Width RS & 2RS = 5/16
**Width RS & 2RS = 11/32
BORE
6300
OPEN
1600 Series
WIDTH
6300 Z
ONE SHIELD
6300 ZZ
TWO SHIELDS
6300 RS
ONE CONTACT
SEAL
6300 2RS
TWO CONTACT
SEALS
6300 NR
RETAINING RING
+ GROOVE ON O.D.
6300 Series
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
OUTSIDE DIAMETER
1600
OPEN
1600 Z
ONE SHIELD
1600 ZZ
TWO SHIELDS
1600 RS
ONE CONTACT
SEAL
1600 2RS
TWO CONTACT
SEALS
1600 NR
RETAINING RING
+ GROOVE ON O.D.
8
5
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
1600 SERIES
S
B
A
L
L
B
E
A
R
I
N
G
S
Interchange
BORE
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
MM
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Email: sales@nationalprecision.com
www.nationalprecision.com
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
Fax: 425.222.5950
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INCH
6200
10
.3937
-.0003
30
1.1811
-.0004
9
.3543
.025
8
3/16
500
885
6201
12
.4724
-.0003
32
1.2598
-.0005
10
.3937
.025
7
7/32
595
1055
6202
15
.5906
-.0003
35
1.3780
-.0005
11
.4331
.025
8
7/32
675
1180
6203
17
.6693
-.0003
40
1.5748
-.0005
12
.4724
.025
8
1/4
890
1500
6204
20
.7874
-.0004
47
1.8504
-.0005
14
.5512
.040
8
5/16
1390
2220
6205
25
.9843
-.0004
52
2.0472
-.0005
15
.5906
.040
9
5/16
1565
2415
6206
30
1.1811
-.0004
62
2.4409
-.0005
16
.6299
.040
9
3/8
2255
3360
6207
35
1.3780
-.0005
72
2.8346
-.0005
17
.6693
.040
9
7/16
3070
4430
6208
40
1.5748
-.0005
80
3.1496
-.0005
18
.7087
.040
9
15/32
3520
5035
6209
45
1.7717
-.0005
85
3.3465
-.0005
19
.7480
.040
9
1/2
4005
5655
6210
50
1.9685
-.0005
90
3.5433
-.0006
20
.7874
.040
10
1/2
4450
6065
6211
55
2.1654
-.0006
100
3.9370
-.0006
21
.8268
.060
10
9/16
5630
7500
6212
60
2.3622
-.0006
110
4.3307
-.0006
22
.8661
.060
10
5/8
6955
9065
6213
65
2.5591
-.0006
120
4.7244
-.0006
23
.9055
.060
10
21/32
7665
9900
6214
70
2.7559
-.0006
125
4.9213
-.0008
24
.9449
.060
10
11/16
8415
10715
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
BORE
WIDTH
OUTSIDE DIAMETER
6200 Series
6200
OPEN
6200 Z
ONE SHIELD
6200 ZZ
TWO SHIELDS
6200 RS
ONE CONTACT
SEAL
6200 2RS
TWO CONTACT
SEALS
6200 NR
RETAINING RING
+ GROOVE ON O.D.
NATIONAL
PRECISION
BEARING
GENERAL
NICE/SKF
SCHATZ
NATIONAL
PRECISION
BEARING
GENERAL
NICE/SKF
SCHATZ
1601
1601 ZZ
1601 2RS
21103-00
21103-77
21103-78
1601NS
1601DS
1601DC
BR 01
BR 7701
BR 9901A
1623
1623 ZZ
1623 2RS
22210-00
22210-77
22210-88
1623NS
1623DS
1623DC
BR 23
BR 7723
BR 9923A
1602
1602 ZZ
1602 2RS
21104-00
21104-77
21104-88
1602NS
1602DS
1602DC
BR 02
BR 7702
BR 9902A
1628
1628 ZZ
1628 2RS
22610-00
22610-77
22610-88
1628NS
1628DS
1628DC
BR 28
BR 7728
BR 9928A
1603
1603 ZZ
1603 2RS
21405-00
21405-77
21405-88
1603NS
1603DS
1603DC
BR 03
BR 7703
BR 9903A
1630
1630 ZZ
1630 2RS
22612-00
22612-77
22612-88
1630NS
1630DS
1630DC
BR 30
BR 7730
BR 9930A
1604
1604 ZZ
1604 2RS
21406-00
21406-77
21406-88
1604NS
1604DS
1604DC
BR 04
BR 7704
BR 9904A
1633
1633 ZZ
1633 2RS
22810-00
22810-77
22810-88
1633NS
1633DS
1633DC
BR 33
BR 7733
BR 9933A
1605
1605 ZZ
1605 2RS
21505-00
21505-77
21505-88
1605NS
1605DS
1605DC
BR 05
BR 7705
BR 9905A
1635
1635 ZZ
1635 2RS
22812-00
22812-77
22812-88
1635NS
1635DS
1635DC
BR 35
BR 7735
BR 9935A
1606
1606 ZZ
1606 2RS
21506-00
21506-77
21506-88
1606NS
1606DS
1606DC
BR 06
BR 7706
BR 9906A
1638
1638 ZZ
1638 2RS
23212-00
23212-77
23212-88
1638NS
1638DS
1638DC
BR 38
BR 7738
BR 9938A
1607
1607 ZZ
1607 2RS
21507-00
21507-77
21507-88
1607NS
1607DS
1607DC
BR 07
BR 7707
BR 9907A
1640
1640 ZZ
1640 2RS
23214-00
23214-77
23214-88
1640NS
1640DS
1640DC
BR 40
BR 7740
BR 9940A
1614
1614 ZZ
1614 2RS
21806-00
21806-77
21806-88
1614NS
1614DS
1614DC
BR 14
BR 7714
BR 9914A
1641
1641 ZZ
1641 2RS
23216-00
23216-77
23216-88
1641NS
1641DS
1641DC
BR 41
BR 7741
BR 9941A
1615
1615 ZZ
1615 2RS
21807-00
21807-77
21807-88
1615NS
1615DS
1615DC
BR 15
BR 7715
BR 9915A
1652
1652 ZZ
1652 2RS
24018-00
24018-77
24018-88
1652NS
1652DS
1652DC
BR 52
BR 7752
BR 9952A
1616
1616 ZZ
1616 2RS
21808-00
21808-77
21808-88
1616NS
1616DS
1616DC
BR 16
BR 7716
BR 9916A
1654
1654 ZZ
1654 2RS
24020-00
24020-77
24020-88
1654NS
1654DS
1654DC
BR 54
BR 7754
BR 9954A
1620
1620 ZZ
1620 2RS
22207-00
22207-77
22207-88
1620NS
1620DS
1620DC
BR 20
BR 7720
BR 9920A
1657
1657 ZZ
1657 2RS
24120-00
24120-77
24120-88
1657NS
1657DS
1657DC
BR 57
BR 7757
BR 9957A
1621
1621 ZZ
1621 2RS
22208-00
22208-77
22208-88
1621NS
1621DS
1621DC
BR 21
BR 7721
BR 9921A
1658
1658 ZZ
1658 2RS
24121-00
24121-77
24121-88
1658NS
1658DS
1658DC
BR 58
BR 7758
BR 9958A
1622
1622 ZZ
1622 2RS
22209-00
22209-77
22209-88
1622NS
1622DS
1622DC
BR 22
BR 7722
BR 9922A
Interchange
Light Series
BASIC
PART
NUMBER
Tel: 800.426.8038
Tel: 800.426.8038
6200 SERIES
4
9
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
S
V GROOVE
INDUSTRY
PART
NUMBER
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
BORE
O.D.
WIDTH
L1
L2
R
+.0000
–.0003
±.005
±.0000
–.0050
REF.
REF.
WILL
CLEAR
RADIUS
DYNAMIC RADIAL LOAD LBS.
Based on average life of 2500 hrs
GAGE
WIRE
DIA.
33.3
RPM
100
RPM
500
RPM
THRUST
LOAD
LBS.
1000
RPM
STATIC
RADIAL
LOAD
LBS.
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
6000 SERIES
Tel: 800.426.8038
Guide Wheel Bearings
NATIONAL
PART
NUMBER
B
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Extra Light
BASIC
PART
NUMBER
BORE
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
MM
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INCH
NW1
W1
.1875
.771
.3100
.314
.625
.012
.0937
350
245
145
112
65
245
6000
10
.3937
-.0003
26
1.0236
-.0004
8
.3150
.012
7
3/16
440
790
NW1X
W1X
.1875
.771
.3100
.314
.625
.012
.0937
350
245
145
112
65
245
6001
12
.4724
-.0003
28
1.1024
-.0004
8
.3150
.012
7
3/16
500
805
NW1SSX
NW2
NW2X
NW2SSX
NW3
NW3X
NW3SSX
W1SSX
1875
.771
.3100
.314
.625
.012
.0937
310
218
126
100
55
200
6002
15
.5906
-.0003
32
1.2598
-.0005
9
.3543
.012
9
3/16
565
965
W2
.3750
1.210
.4375
.530
1.000
.012
.1250
734
487
288
227
122
610
6003
17
.6693
-.0003
35
1.3780
-.0005
10
.3937
.012
10
3/16
625
1040
W2X
.3750
1.210
.4375
.530
1.000
.012
.1250
734
487
288
227
122
610
6004
20
.7874
-.0004
42
1.6535
-.0005
12
.4724
.024
8
1/4
1000
1500
W2SSX
.3750
1.210
.4375
.530
1.000
.012
.1250
562
390
230
183
90
455
6005
25
.9843
-.0004
47
1.8504
-.0005
12
.4724
.024
10
1/4
1115
1730
W3
.4724
1.803
.6250
.640
1.500
.024
.1875
1338
925
543
435
535
910
6006
30
1.1811
-.0004
55
2.1654
-.0005
13
.5118
.039
11
9/32
1550
2280
W3X
.4724
1.803
.6250
.640
1.500
.024
.1875
1338
925
543
435
535
910
6007
35
1.3780
-.0005
62
2.4409
-.0005
14
.5512
.039
11
5/16
1905
2760
W3SSX
.4724
1.803
.6250
.640
1.500
.024
.1875
1070
745
434
349
428
705
6008
40
1.5748
-.0005
68
2.6772
-.0005
15
.5906
.039
13
5/16
2085
3050
NW4
W4
.5906
2.360
.7500
.878
2.000
.024
.2500
2055
1405
815
650
655
1235
6009
45
1.7717
-.0005
75
2.9528
-.0005
16
.6299
.039
13
11/32
2735
3620
NW4X
W4X
.5906
2.360
.7500
.878
2.000
.024
.2500
2055
1405
815
650
655
1235
6010
50
1.9685
-.0005
80
3.1496
-.0005
16
.6299
.039
14
11/32
2945
3760
W4SSX
.5906
2.360
.7500
.878
2.000
.024
.2500
1593
1129
648
520
510
955
NW4SSX
TWO SHIELDS
TWO SEALS
V Groove Guide Wheel Bearings
GAGE WIRE
6011
55
2.1654
-.0006
90
2.5433
-.0006
18
.7087
.039
13
13/32
3820
4870
6012
60
2.3622
-.0006
95
3.7402
-.0006
18
.7087
.039
14
13/32
4115
5070
O.D.
6013
65
2.5591
-.0006
100
3.9370
-.0006
18
.7087
.039
15
12/32
4405
5260
BORE
6014
70
2.7559
-.0006
110
4.3307
-.0006
20
.7874
.039
14
15/32
5475
6560
R
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
WIDTH
NW1
SAE: 52100
NW1X
–
AISI-440C
NW1SSX
BORE
WIDTH
L1
L2
OUTSIDE DIAMETER
V GROOVE
Guide Wheel Bushings
NATIONAL
PART NO.
ADJUSTABLE
INDUSTRY NATIONAL
PART NO. PART NO.
NB1
N1
NBX1
A
INDUSTRY
PART NO.
NX1
B
.550
C
.300
D
.1873
7/16
E
.140
NBX
SERIES
F
NB2
N2
NBX2
NX2
.706
.425
.3748
9/16
.250
.024
N3
NBX3
NX3
.990
.615
.4722
3/4
.312
.042
NB4
N4
NBX4
NX4
1.177
.740
.5904
7/8
.375
.060
6000 ZZ
TWO SHIELDS
6000 RS
ONE CONTACT
SEAL
6000 2RS
TWO CONTACT
SEALS
6000 NR
RETAINING RING
+ GROOVE ON O.D.
NBX AJUSTABLE BUSHING
A
A
B
E
B
E
6000 Z
ONE SHIELD
.012
NB3
NB CONCENTRIC BUSHING
6000
OPEN
6000 Series
CONCENTRIC
F
D
C
C
D
10
3
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
I
N
G
S
B
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
600 SERIES
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Extra Small
BORE
BASIC
PART
NUMBER
MM
INCH
OUTSIDE DIAMETER
TOL.
MM
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
MM
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
INDUSTRIAL
AIRFRAME
TYPE
B
A
L
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
Fax: 425.222.5950
Ball Bearings
Email: sales@nationalprecision.com
www.nationalprecision.com
(Not intended for aircraft applications)
B500 Series
Single Row
Torque Tube Type
BEARING
NUMBER
BORE
O.D.
TYPE
d
+.0007
-.0007
D
+.0000
-.0010
OPEN
INCH
SEALED
MINIMUM
CHAMFER
WIDTH
Bi
+.000
-.005
Bo
+.000
-.005
r1
r2
BALLS
NO.
THRUST
LOAD
LBS.
STATIC
RADIAL
LOAD
LBS.
DIA.
634
4
.1575
-.0003
16
.6299
-.0004
5
.1969
.012
6
1/8
165
330
B538
B538DD
.6250
1.0625
.281
.250
.015
.015
21
1/8
1500
3280
635
5
.1969
-.0003
19
.7480
-.0004
6
.2362
.012
7
1/8
195
385
B539
B539DD
.7500
1.1875
.281
.250
.015
.015
24
1/8
1700
3750
626
6
.2362
-.0003
19
.7480
-.0004
6
.2362
.012
7
1/8
195
385
B540
B540DD
.8750
1.3125
.281
.250
.015
.015
27
1/8
1900
4220
627
7
.2756
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
B541
B541DD
1.0625
1.5000
.281
.250
.015
.015
32
1/8
2200
5000
8
.3150
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
B542
B542DD
1.3125
1.7500
.281
.250
.015
.015
38
1/8
2700
5950
608 N2
608
7.932
.3123
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
B543
B543DD
1.5625
2.0000
.281
.250
.015
.015
44
1/8
3200
6880
608 N3
7.940
.3126
-.0003
22
.8661
-.0004
7
.2756
.012
7
5/32
305
570
9
.3543
-.0003
26
1.0236
-.0004
8
.3150
.025
7
3/16
440
780
629
DD = Equipped with Teflon® coated fabric seal
D
d
BORE
r2
Bo
Bi
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
B500
Industrial Airframe Type Bearings
r1
B500DD
WIDTH
DW Series
OUTSIDE DIAMETER
BEARING
NUMBER
Double Row
Extra Wide Type
608
OPEN
608 Z
ONE SHIELD
608 ZZ
TWO SHIELDS
608 RS
ONE CONTACT
SEAL
608 2RS
TWO CONTACT
SEALS
608 NR
RETAINING RING
+ GROOVE ON O.D.
MINIMUM
CHAMFER
WIDTH
BORE
O.D.
d
+.0000
-.0005
D
+.0000
-.0005
Bi
+.000
-.005
Bo
+.000
-.005
r1
+.015
-.000
r2
+.015
-.000
THRUST
LOAD
LBS.
BALLS
NO.
STATIC
RADIAL
LOAD
LBS.
DIA.
DW4K2*
.2500
.6250
.562
.500
.005
.016
16
3/32
500
1400
DW4K*
.2500
.7500
.875
.750
.005
.016
14
9/64
900
2770
DW4
.2500
.7500
.875
.750
.005
.016
24
1/8
1240
3750
DW5
.3125
.8750
.938
.813
.005
.016
26
9/64
1600
5140
DW6
.3750
1.0625
1.188
1.063
.005
.016
24
3/16
2600
8440
600 Series
* Retainer type
Bo
r1
d
Equipped with Teflon® seals.
r2
2
D
11
Bi
P
R
E
C
I
S
I
O
N
B
A
L
L
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B
A
L
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INDUSTRIAL
AIRFRAME
TYPE
B
A
L
L
B
E
A
R
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S
B
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
(Not intended for aircraft applications)
KP Series
BEARING
NUMBER
Single Row
Radial Type
BORE
O.D.
d
+.0000
-.0005
MINIMUM
CHAMFER
WIDTH
D
+.0000
-.0005
Bi
+.000
-.005
Bo
+.000
-.005
r1
+.015
-.000
BALLS
r2
+.015
-.000
NO.
THRUST
LOAD
LBS.
SIZE
STATIC
RADIAL
LOAD
LBS.
L
B
E
A
R
I
N
G
S
Tel: 800.426.8038
Fax: 425.222.5950
Email: sales@nationalprecision.com
www.nationalprecision.com
Extra Light Inch
BASIC
PART
NUMBER
BORE
FRAC.
INCH
OUTSIDE DIAMETER
TOL.
FRAC.
INCH
WIDTH
BALLS
MAX.
FILLET
RADIUS
TOL. +.0000
-.0050
TOL.
OPEN
NO.
DIAM.
STATIC
DYNAMIC
LOAD-LBS LOAD-LBS
SEAL/SHIELD
KP 3L
.1900
.6250
.245
.203
.005
.010
10
1/8
700
1560
R2
1/8
.1250
-.0003
3/8
.3750
-.0004
.1562
.1562
.012
7
1/16
49
113
KP 3
.1900
.7774
.297
.270
.005
.022
12
1/8
900
1880
R3
3/16
.1875
-.0003
1/2
.5000
-.0004
.1562
.1960
.012
7
3/32
70
145
KP 4
.2500
.9014
.484
.335
.005
.032
11
5/32
1200
2680
R4
1/4
.2500
-.0003
5/8
.6250
-.0004
.1960
.1960
.012
7
1/8
195
385
KP 5
.3125
1.2500
.558
.375
.015
.032
9
1/4
2500
5620
R 4A
1/4
.2500
-.0003
3/4
.7500
-.0004
.2188
.2812
.016
6
9/54
150
320
KP 6
.3750
1.4375
.620
.469
.015
.032
10
9/32
3500
7910
R6
3/8
.3750
-.0003
7/8
.8750
-.0004
.2188
.2812
.016
7
5/32
305
570
KP 8
.5000
1.6875
.620
.500
.015
.044
10
3/8
5200
11800
R8
1/2
.5000
-.0003
1 1/8
1.1250
-.0004
.2500
.3125
.016
8
3/16
500
885
KP 10
.6250
1.9375
.620
.500
.015
.044
10
3/8
6200
14100
R 10
5/8
.6250
-.0003
1 3/8
1.3750
-.0005
.2812
.3438
.031
9
3/16
565
970
r2
Bo
45º
r1
45º
d
R 12
3/4
.7500
-.0004
1 5/8
1.6250
-.0005
.3125
.4375
.031
10
7/32
850
1265
R 14
7/8
.8750
-.0004
1 7/8
1.8750
-.0005
.3750
.5000
.031
10
1/4
1110
1735
R 16
1
1.0000
-.0004
2
2.0000
-.0005
.3750
.5000
.031
10
1/4
1110
1735
R 18
1 1/8
1.1250
-.0004
2 1/8
2.1250
-.0005
.3750
.5000
.031
11
1/4
1225
1840
R 20
1 1/4
1.2500
-.0005
2 1/4
2.2500
-.0005
.3750
.5000
.031
12
1/4
1335
1920
D
BORE
Equipped with Teflon® seals.
MATERIAL - Standard SAE 52100
Stainless Steel available upon request
Bi
KPA Series
BEARING
NUMBER
Single Row
Radial Type
BORE
O.D.
d
+.0000
-.0005
D
+.0000
-.0005
MINIMUM
CHAMFER
WIDTH
Bi
+.000
-.005
Bo
+.000
-.005
r1
+.015
-.000
BALLS
r2
+.015
-.000
THRUST
LOAD
LBS.
NO.
SIZE
OUTSIDE DIAMETER
STATIC
RADIAL
LOAD
LBS.
KP 3AL
.1900
.5000
.237
.196
.005
.012
11
3/32
430
970
KP 3A
.1900
.6250
.297
.234
.005
.016
10
1/8
700
1560
KP 4A
.2500
.7500
.281
.219
.005
.016
12
1/8
900
1880
KP 5A
.3125
.8125
.297
.234
.015
.016
14
1/8
1000
2190
KP 6A
.3750
.8750
.313
.250
.015
.016
16
1/8
1100
2500
KP 8A
.5000
1.1250
.375
.313
.015
.016
16
5/32
1700
3910
KP10A
.6250
1.3750
.406
.344
.015
.032
14
7/32
3000
6700
r2
WIDTH
R4
OPEN
R4 Z
ONE SHIELD
R4 ZZ
TWO SHIELDS
R4 RS
ONE CONTACT
SEAL
R4 2RS
TWO CONTACT
SEALS
R4 NR
RETAINING RING
+ GROOVE ON O.D.
Bo
R Series
Industrial Airframe Type Bearings
L
R SERIES
Tel: 800.426.8038
Ball Bearings
A
45º
r1
45º
d
D
Equipped with Teflon® seals.
12
1
Bi
P
R
E
C
I
S
I
O
N
B
A
L
L
B
E
A
R
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G
S
P
R
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C
I
S
I
O
N
B
A
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B
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Conversion Table
D
Miniature Bearings
I S T E R
Fraction
R Series
Extra Light Inch ......................................................................................................................... pg 1
1/64
1/32
600 Series
Extra Small ................................................................................................................................ pg 2
3/64
6000 Series
Extra Light ................................................................................................................................ pg 3
1/16
6200 Series
Light ......................................................................................................................................... pg 4
6300 Series
5/64
3/32
Medium .................................................................................................................................... pg 5
6000, 6200, & 6300 Series Interchange
Radial Internal Clearance ........................................................................................... pg 6
Specials ............................................................................................................................... pg 7
1600 Series
7/64
1/8
Commercial Inch ....................................................................................................................... pg 8
9/64
5/32
1600 Interchange ........................................................................................................... pg 9
11/64
3/16
V Groove Guide Wheel Bearings & Bushings
..................................................... pg 10
Industrial Airframe Type Ball Bearings
B500 & DW Series ............................................................................................................ pg 11
KP & KPA Series ................................................................................................................. pg 12
Metric Conversion Table ........................................................................... inside back cover
13/64
7/32
15/64
1/4
17/64
9/32
19/64
5/16
See our listing in the Thomas Register
SEE OUR
CATALOG IN THE
CATALOG FILE SECTION
AND ON THE INTERNET
21/64
11/32
23/64
3/8
25/64
h t t p : / / w w w. n p b . t h o m a s re g i s t e r. c o m
13/32
National Precision Bearing reserves the right to
change specifications and other information included
in this catalog without notice.
All information, data and dimension tables in this
catalog have been carefully compiled and thoroughly
checked. However, no responsibility for possible
errors or omissions can be assumed.
National Precision Bearing is a division of
Mechatronics, Inc.
Copyright 2000 National Precision Bearing
Other National Precision
Bearing Product Lines
E
Q
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INDUSTRIAL SERIES
R E
BALL
BEARINGS
Metric
Inch
0.0156
0.0250
0.0312
0.0394
0.0400
0.0469
0.0472
0.0550
0.0591
0.0625
0.0709
0.0781
0.0787
0.0906
0.0937
0.0984
0.1000
0.1024
0.1094
0.1100
0.1102
0.1181
0.1250
0.1256
0.1378
0.1406
0.1562
0.1575
0.1719
0.1875
0.1892
0.1969
0.2031
0.2165
0.2187
0.2344
0.2362
0.2500
0.2656
0.2756
0.2812
0.2883
0.2969
0.3125
0.3150
0.3281
0.3437
0.3543
0.3594
0.3750
0.3906
0.3937
0.4062
mm
0.3969
0.6350
0.7937
1.0000
1.0160
1.1906
1.2000
1.3970
1.5000
1.5875
1.8000
1.9844
2.0000
2.3012
2.3812
2.5000
2.5400
2.6000
2.7781
2.7940
2.8000
3.0000
3.1750
3.1902
3.5000
3.5719
3.9687
4.0000
4.3656
4.7625
4.8057
5.0000
5.1594
5.4991
5.5562
5.9531
6.0000
6.3500
6.7469
7.0000
7.1437
7.3228
7.5406
7.9375
8.0000
8.3344
8.7312
9.0000
9.1281
9.5250
9.9213
10.0000
10.3187
Fraction
27/64
7/16
29/64
15/32
31/64
1/2
33/64
17/32
35/64
9/16
37/64
19/32
39/64
5/8
41/64
21/32
43/64
11/16
45/64
23/32
47/64
3/4
49/64
25/32
51/64
13/16
53/64
27/32
55/64
7/8
57/64
29/32
59/64
Inch
mm
0.4100
0.4219
0.4250
0.4331
0.4375
0.4531
0.4600
0.4687
0.4724
0.4844
0.5000
0.5118
0.5156
0.5312
0.5469
0.5512
0.5625
0.5781
0.5906
0.5937
0.6094
0.6250
0.6299
0.6406
0.6500
0.6562
0.6620
0.6693
0.6719
0.6875
0.7031
0.7087
0.7187
0.7344
0.7435
0.7480
0.7500
0.7656
0.7717
0.7812
0.7874
0.7969
0.8125
0.8268
0.8281
0.8437
0.8594
0.8661
0.8750
0.8906
0.9055
0.9062
0.9219
10.4140
10.7156
10.7950
11.0000
11.1125
11.5094
11.6840
11.9062
12.0000
12.3031
12.7000
13.0000
13.0968
13.4937
13.8906
14.0000
14.2875
14.6844
15.0000
15.0812
15.4781
15.8750
16.0000
16.2719
16.5100
16.6687
16.8148
17.0000
17.0656
17.4625
17.8594
18.0000
18.2562
18.6532
18.8849
19.0000
19.0500
19.4469
19.6012
19.8433
20.0000
20.2402
20.6375
21.0000
21.0344
21.4312
21.8281
22.0000
22.2250
22.6219
23.0000
23.0187
23.4156
Fraction
15/16
61/64
31/32
63/64
1
1-1/4
1-1/2
1-3/4
2
2-1/4
2-1/2
2-3/4
3
3-1/4
3-1/2
3-3/4
4
4-1/4
4-1/2
4-3/4
5
5-1/2
Inch
0.9375
0.9449
0.9531
0.9687
0.9843
0.9844
1.0000
1.0236
1.0415
1.0480
1.0630
1.1025
1.1417
1.1812
1.2500
1.5000
1.5354
1.5748
1.6535
1.7500
1.7717
1.8898
1.9685
2.0000
2.0472
2.1654
2.2047
2.2500
2.3622
2.5000
2.5197
2.7500
2.8346
2.9528
3.0000
3.1496
3.2500
3.5000
3.5433
3.7500
3.9370
4.0000
4.2500
4.3307
4.5000
4.7244
4.7500
5.0000
5.5000
mm
23.8125
24.0000
24.2094
24.6062
25.0000
25.0031
25.4000
26.0000
26.4541
26.6192
27.0000
28.0000
29.0000
30.0000
31.7500
38.1000
39.0000
40.0000
42.0000
44.4500
45.0000
48.0000
50.0000
50.8000
52.0000
55.0000
56.0000
57.1500
60.0000
63.5000
64.0000
69.8500
72.0000
75.0000
76.2000
80.0000
82.5500
88.9000
90.0000
95.2500
100.0000
101.6000
107.9500
110.0000
114.3000
120.0000
120.6500
127.0000
139.7000
Thin Section Bearings
Self Lubicating Bearings
Spherical Bearings
See our listing in the Thomas Register
SEE OUR
CATALOG IN THE
CATALOG FILE SECTION
AND ON THE INTERNET
h t t p : / / w w w. n p b . t h o m a s re g i s t e r. c o m
Call us at 1-800-426-8038
for all your bearing needs.
N
A
T
I
O
N
A
L
INDUSTRIAL SERIES
National Precision Bearing
INDUSTRIAL SERIES
8152 - 304TH Avenue SE
PO Box 613
Preston, WA 98050 USA
Tel: 800.426.8038
Tel: 425.222.5900
Fax: 425.222.5950
P
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C
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I
O
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E-mail: sales@nationalprecision.com
ALIT
09/23/00
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www.nationalprecision.com
I S T E R